JP2907645B2 - Transmission structure - Google Patents
Transmission structureInfo
- Publication number
- JP2907645B2 JP2907645B2 JP4199319A JP19931992A JP2907645B2 JP 2907645 B2 JP2907645 B2 JP 2907645B2 JP 4199319 A JP4199319 A JP 4199319A JP 19931992 A JP19931992 A JP 19931992A JP 2907645 B2 JP2907645 B2 JP 2907645B2
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- shift gear
- gear
- transmission shaft
- shift
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Gears, Cams (AREA)
- Structure Of Transmissions (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、走行用や作業用等の各
種の伝動系において、シフトギヤをスライド操作して変
速を行う変速伝動構造で、詳しくは、伝動軸にスプライ
ン構造を介してスライド操作自在にかつ一体回転自在に
外嵌させたシフトギヤを、伝動軸軸芯方向の中間の伝動
位置で一つの変速ギヤに咬合させるとともに、前記中間
の伝動位置の軸芯方向両側の伝動位置の夫々にシフトギ
ヤをスライド操作することにより、その両側の伝動位置
の各位置で前記シフトギヤを前記とは異なる各変速ギヤ
に咬合させて、変速するように構成してある構造に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speed change transmission structure for performing a shift operation by sliding a shift gear in various transmission systems for traveling or work use, and more particularly, to a transmission shaft which slides on a transmission shaft via a spline structure. The shift gear externally operably and integrally rotatable is engaged with one transmission gear at an intermediate transmission position in the axial direction of the transmission shaft, and each of the transmission positions on both sides in the axial direction of the intermediate transmission position. The present invention relates to a structure in which the shift gear is engaged with each of the transmission gears different from the above at each of the transmission positions on both sides by sliding operation of the shift gear.
【０００２】[0002]
【従来の技術】前述のようにシフトギヤをスライド操作
して変速を行う変速伝動構造の一例が、実開平４−５０
５８０号公報に開示されている。この構造では前記公報
の第２図に示すように、外周面にスプライン部を備えた
伝動軸（前記公報の第２図中の１１）に、シフトギヤ
（前記公報の第２図中の１４）をスライド操作自在、且
つ、一体回転自在に外嵌して、このシフトギヤをスライ
ド操作し、別位置にある所望の変速ギヤ（前記公報の第
２図中の１２，１７，１８）に咬合させることにより、
伝動軸（前記公報の第２図中の１１）に伝達されてくる
走行用の動力をシフトギヤにより３段に変速して、この
シフトギヤから下手側の伝動軸（前記公報の第２図中の
１５）に伝達している。2. Description of the Related Art As described above, one example of a shift transmission structure for performing a shift operation by sliding a shift gear is disclosed in Japanese Utility Model Laid-Open No. 4-50.
No. 580. In this structure, as shown in FIG. 2 of the above publication, a shift gear (14 in FIG. 2 of the above publication) is attached to a transmission shaft (11 in FIG. 2 of the above publication) having a spline portion on the outer peripheral surface. The shift gear is slidably operated and externally fitted so as to be integrally rotatable. The shift gear is slid and engaged with a desired transmission gear (12, 17, 18 in FIG. 2 of the above publication) at another position. ,
The traveling power transmitted to the transmission shaft (11 in FIG. 2 of the above publication) is shifted to three stages by a shift gear, and the lower transmission shaft (15 in FIG. 2 of the above publication) is shifted from this shift gear. ).
【０００３】[0003]
【発明が解決しようとする課題】前述の構造は、コンス
タントメッシュ型式やシンクロメッシュ型式等のような
型式ではなく、シフトギヤのギヤ歯を変速ギヤのギヤ歯
に直接咬合させる型式となっている。従って、シフトギ
ヤと伝動軸のスプライン嵌合部分でのガタや、シフトギ
ヤと変速ギヤとの咬合部分でのガタ等により、伝動軸の
軸芯方向に沿うスラスト力がシフトギヤに対して発生し
易い。これにより、シフトギヤの伝動トルクが特に大き
くなった場合に、前述のスラスト力も大きくなってシフ
トギヤが伝動軸に沿って自然に移動し、変速ギヤから抜
けてしまうような事態を招くおそれがある。The above-mentioned structure is of a type in which the gear teeth of the shift gear are directly engaged with the gear teeth of the transmission gear, not of a type such as a constant mesh type or a synchromesh type. Accordingly, a thrust force along the axis of the transmission shaft is easily generated on the shift gear due to play at a spline fitting portion between the shift gear and the transmission shaft, and play at an engagement portion between the shift gear and the transmission gear. As a result, when the transmission torque of the shift gear becomes particularly large, the above-mentioned thrust force also becomes large, which may cause the shift gear to naturally move along the transmission shaft and come off the transmission gear.
【０００４】そこで、例えば図８に示すようにシフトギ
ヤ５を伝動軸１に沿って変速範囲Ｄでスライド操作し
て、シフトギヤ５を変速ギヤ６，７，８に咬合させる場
合において、伝動軸１のスプライン部に複数本の環状の
溝１０を設ける。そして、図８に示すシフトギヤ５の位
置において、シフトギヤ５の内面で溝１０が覆われて溝
１０が外方に露出しないように、この溝１０の位置を設
定することが考えられている。これにより、溝１０の角
部がシフトギヤ５の内面のスプライン部に当て付けられ
抵抗が与えられて、図８に示す位置からのシフトギヤ５
の自然な移動を防止するのである。しかし、この図８の
構造においても大きなスラスト力がシフトギヤ５に発生
すると、シフトギヤ５が移動して変速ギヤ８から抜けて
しまうおそれがあった。本発明は、各部のガタ等による
スラスト力で、シフトギヤが変速ギヤから抜けてしまう
ような事態を防止することを目的としている。Therefore, as shown in FIG. 8, for example, when the shift gear 5 is slid along the transmission shaft 1 in the shift range D to engage the shift gear 5 with the transmission gears 6, 7, 8, A plurality of annular grooves 10 are provided in the spline portion. At the position of the shift gear 5 shown in FIG. 8, it is considered that the position of the groove 10 is set so that the groove 10 is covered by the inner surface of the shift gear 5 and the groove 10 is not exposed to the outside. As a result, the corners of the grooves 10 are applied to the splines on the inner surface of the shift gear 5 to provide resistance, and the shift gear 5 is moved from the position shown in FIG.
To prevent the natural movement of the person. However, also in the structure of FIG. 8, when a large thrust force is generated in the shift gear 5, there is a possibility that the shift gear 5 moves and slips off the transmission gear 8. SUMMARY OF THE INVENTION It is an object of the present invention to prevent a situation in which a shift gear is disengaged from a transmission gear by a thrust force due to backlash or the like of each part.
【０００５】[0005]
【課題を解決するための手段】請求項１に係る本第１発
明の特徴は、伝動軸にスプライン構造を介してスライド
操作自在にかつ一体回転自在に外嵌させたシフトギヤ
を、伝動軸軸芯方向の中間の伝動位置で一つの変速ギヤ
に咬合させるとともに、前記中間の伝動位置の軸芯方向
両側の伝動位置の夫々にシフトギヤをスライド操作する
ことにより、その両側の伝動位置の各位置で前記シフト
ギヤを前記とは異なる各変速ギヤに咬合させて、変速す
るように構成してある変速伝動構造であって、前記中間
の伝動位置にシフト位置するシフトギヤを伝動軸に連動
させる伝動軸側の中間のスプライン部と、前記中間の伝
動位置の軸芯方向両側の伝動位置における伝動軸側のス
プライン部とを分離させる溝部を伝動軸に形成してある
点にある。According to a first aspect of the present invention, there is provided a shift gear in which a transmission shaft is slidably and integrally rotatably fitted to a transmission shaft via a spline structure, and the transmission shaft shaft core. At the transmission position in the middle of the direction, the transmission gear is engaged with one transmission gear, and the shift gear is slid to each of the transmission positions on both sides in the axial direction of the intermediate transmission position, so that the transmission position on each side of the transmission A shift transmission structure in which the shift gear is engaged with each of the different shift gears to shift the speed, and the shift gear, which is shifted to the intermediate transmission position, is interlocked with a transmission shaft. Is formed on the transmission shaft to separate the spline portion from the spline portion on the transmission shaft side at the transmission position on both sides in the axial center direction of the intermediate transmission position.
【０００６】請求項２に係る本第２発明の特徴は、上記
本第１発明の特徴において、中間のスプライン部と軸芯
方向両側のスプライン部とを分離させる両溝部を、中間
の伝動位置にシフト位置するシフトギヤ内面の内方側に
入り込ませてある点にある。According to a second aspect of the present invention, in the first aspect of the present invention, the two groove portions for separating the intermediate spline portion and the spline portions on both sides in the axial direction are located at the intermediate transmission position. The point is that it is inserted into the inner side of the shift gear inner surface at the shift position.
【０００７】[0007]
【作用】上記本第１発明によると、図１に示すように、
伝動軸１におけるスプライン部２，３，４のうち、中間
のスプライン部４が、両側のスプライン部２，３に対し
て溝部９により分離された状態となっているから、シフ
トギヤ５が中間の伝動位置Ａ３にシフト位置する状態に
おいてシフトギヤ５から変速ギヤ８、又は変速ギヤ８か
らシフトギヤ５に動力が伝達された場合に、伝動軸１の
スプライン部４とシフトギヤ５の内面のスプライン部５
ａとの間のガタにより、例えば、図２に示すように伝動
軸１の軸芯方向に対してシフトギヤ５の軸芯方向が少し
斜めに傾いてシフトギヤ５がスラスト力により図２の紙
面左方（他方のスプライン部３側）に移動し始めても、
図２及び図３に示すように、シフトギヤ５の内面のスプ
ライン部５ａの角部５ｂと溝部形成に伴い形成された他
方のスプライン部３の角部３ａとの位相が前記シフトギ
ヤの伝動軸に対する傾きと伝動トルクによる伝動軸の捩
じれ作用とによりずれることで、両角部５ｂ，３ａが伝
動軸軸芯方向で接当し、この両角部５ｂ，３ａの接当作
用により、シフトギヤ５が伝動軸１に沿って中間の伝動
位置Ａ３から他方のスプライン部３側に自然に大きく移
動するようなことがなくなり、その結果、シフトギヤ５
と変速ギヤ８との咬合が保持される。そして、同様にし
て、中間の伝動位置Ａ３にシフト位置するシフトギヤ５
がスラスト力により一方のスプライン部２側に移動し始
めた場合も、シフトギヤ５の内面のスプライン部５ａの
角部５ｂが、溝部形成により形成された一方のスプライ
ン部２の角部に接当し、この両角部５ｂの接当作用によ
り、シフトギヤ５が伝動軸１に沿って中間の伝動位置Ａ
３から一方のスプライン部２側に自然に大きく移動する
ようなことがなくなり、その結果、シフトギヤ５と変速
ギヤ８との咬合が保持される。According to the first aspect of the present invention, as shown in FIG.
Of the spline portions 2, 3, and 4 in the transmission shaft 1, the intermediate spline portion 4 is separated from the spline portions 2 and 3 on both sides by the groove 9, so that the shift gear 5 is moved to the intermediate transmission position. When power is transmitted from the shift gear 5 to the shift gear 8 or from the shift gear 8 to the shift gear 5 in the state where the gear is shifted to the position A3, the spline portion 4 of the transmission shaft 1 and the spline portion 5 on the inner surface of the shift gear 5 are transmitted.
2, for example, as shown in FIG. 2, the direction of the axis of the shift gear 5 is slightly inclined with respect to the direction of the axis of the transmission shaft 1, and the shift gear 5 is moved to the left in FIG. (To the other spline 3 side)
As shown in FIGS. 2 and 3, the phase of the corner 5b of the spline 5a on the inner surface of the shift gear 5 and the corner 3a of the other spline 3 formed along with the formation of the groove are inclined with respect to the transmission shaft of the shift gear. The two corners 5b and 3a are brought into contact with each other in the direction of the axis of the transmission shaft, and the shift gear 5 is brought into contact with the transmission shaft 1 by the contact between the two corners 5b and 3a. Does not naturally move from the intermediate transmission position A3 to the other spline portion 3 side along the axis.
And the transmission gear 8 are held in engagement. Then, similarly, the shift gear 5 shifted to the intermediate transmission position A3
Also starts to move toward the one spline portion 2 due to the thrust force, the corner 5b of the spline portion 5a on the inner surface of the shift gear 5 comes into contact with the corner of the one spline portion 2 formed by forming the groove. Due to the contact action of the two corners 5b, the shift gear 5 is moved along the transmission shaft 1 to an intermediate transmission position A.
The movement of the shift gear 5 and the transmission gear 8 from the third gear 3 to the one spline part 2 naturally does not occur. As a result, the bite between the shift gear 5 and the transmission gear 8 is maintained.
【０００８】上記本第２発明によると、両溝部を、中間
の伝動位置にシフト位置するシフトギヤ内面の内方側に
入り込ませてあるから、例えば、図６に示すようにシフ
トギヤ５が中間の伝動位置Ａ３にシフト位置している状
態において、伝動トルクがその中間のスプライン部４に
掛かると、前述のように、中間のスプライン部４とシフ
トギヤ５の内面のスプライン部との間のガタにより、伝
動軸１の軸芯方向に対してシフトギヤ５の軸芯方向が少
し斜めに傾くと同時に、伝動軸１が中間のスプライン部
４付近でたわんで、両側のスプライン部２，３と中間の
スプライン部４と間に半径方向の差（図５の差Ｅ及び図
７参照）が生じ、その結果、シフトギヤ５の傾き及び半
径方向の差により、シフトギヤ５の角部５ｂがさらによ
くシフトギヤ移動方向側のスプライン部２又は３の角部
２ａ又は３ａに接当して、シフトギヤ５の前記の移動が
さらによく抑えられる。According to the second aspect of the present invention, since both grooves are inserted into the inner side of the shift gear inner surface shifted to the intermediate transmission position, for example, as shown in FIG. When the transmission torque is applied to the intermediate spline portion 4 in the shift position at the position A3, as described above, the transmission is caused by the play between the intermediate spline portion 4 and the spline portion on the inner surface of the shift gear 5. At the same time as the direction of the axis of the shift gear 5 is slightly inclined with respect to the direction of the axis of the shaft 1, the transmission shaft 1 bends near the intermediate spline section 4, and the spline sections 2 and 3 on both sides and the intermediate spline section 4. (See the difference E in FIG. 5 and FIG. 7), and as a result, the corner 5b of the shift gear 5 is more effectively shifted by the inclination of the shift gear 5 and the difference in the radial direction. And brought into contact with the spline portion 2 or 3 of the corner 2a or 3a on the other side, the movement of the shift gear 5 is suppressed better.
【０００９】[0009]
【発明の効果】従って、本第１発明によれば、伝動軸
に、中間のスプライン部と両側のスプライン部とを分離
させる溝部を形成するといった加工容易で低コストの手
段により、中間の伝動位置にシフト位置するシフトギヤ
が変速ギヤから不測に離脱するといった不都合を防止し
て伝動の信頼性を向上できるようになった。Therefore, according to the first aspect of the present invention, the intermediate transmission position can be easily formed at low cost by forming a groove on the transmission shaft for separating the intermediate spline portion from the spline portions on both sides. Thus, it is possible to prevent the inconvenience that the shift gear at the shift position is unexpectedly disengaged from the transmission gear and improve the reliability of transmission.
【００１０】本第２発明によれば、加工性の困難さ及び
コストアップを招来することなく、中間の伝動位置にシ
フト位置するシフトギヤが変速ギヤから不測に離脱する
といった不都合防止の信頼性をより一層高めることがで
きるようになった。According to the second aspect of the present invention, the reliability of preventing the inconvenience of the shift gear located at the intermediate transmission position being unexpectedly disengaged from the transmission gear can be improved without causing difficulty in workability and increase in cost. It can be raised even more.
【００１１】[0011]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。図１はコンバイン等の作業車における走行伝動系
の一部を示しており、エンジン（図示せず）からの走行
用の動力が、伝動ギヤ１１を介して伝動軸１に伝達され
ている。伝動軸１の外周面にはスプライン部２，３，４
が形成されており、この伝動軸１のスプライン部２，
３，４に、シフトギヤ５がスプライン嵌合構造により、
伝動軸１に沿ってスライド操作自在、且つ、伝動軸１と
一体回転自在に外嵌されている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a part of a traveling transmission system in a working vehicle such as a combine, and traveling power from an engine (not shown) is transmitted to a transmission shaft 1 via a transmission gear 11. Spline parts 2, 3, 4 are provided on the outer peripheral surface of the transmission shaft 1.
Are formed, and the spline portion 2 of the transmission shaft 1 is formed.
3 and 4, the shift gear 5 has a spline fitting structure,
It is slidably operated along the transmission shaft 1 and is externally fitted so as to be rotatable integrally with the transmission shaft 1.
【００１２】伝動軸１の下手側に変速ギヤ６，７，８が
配置されており、手動操作式の変速レバー（図示せず）
及びシフトフォーク（図示せず）により、シフトギヤ５
を変速ギヤ６，７，８の各々の咬合させる３つの伝動位
置Ａ１，Ａ２，Ａ３にスライド操作するように構成して
いる。これにより、伝動軸１に伝達されてくる走行用の
動力が、シフトギヤ５により高中低の３段に変速操作さ
れて、このシフトギヤ５及び変速ギヤ６，７，８を介し
て、下手側の走行装置（図示せず）に伝達されるのであ
る。そして、図１に示すように、シフトギヤ５が伝動軸
軸芯方向の中間の高速の伝動位置Ａ３にシフト位置して
いる状態において、シフトギヤ５内面のスプライン部５
ａ（図２参照）の伝動軸軸芯方向両端の角部５ｂの両外
側の伝動軸１の部分に、環状の溝部９を左右一対設けて
いる。Transmission gears 6, 7, 8 are arranged on the lower side of the transmission shaft 1, and are manually operated transmission levers (not shown).
And a shift fork (not shown).
Is slid to three transmission positions A1, A2, and A3 in which the transmission gears 6, 7, and 8 are engaged. As a result, the traveling power transmitted to the transmission shaft 1 is shifted by the shift gear 5 into three stages of high, medium, and low, and the traveling power on the lower side is transmitted through the shift gear 5 and the transmission gears 6, 7, and 8. It is transmitted to a device (not shown). As shown in FIG. 1, in a state where the shift gear 5 is shifted to the intermediate high-speed transmission position A3 in the axial direction of the transmission shaft, the spline portion 5 on the inner surface of the shift gear 5
A pair of annular grooves 9 is provided on both sides of the transmission shaft 1 on both outer sides of the corners 5b at both ends of the transmission shaft in the axial direction of the transmission shaft a (see FIG. 2).
【００１３】図１に示す状態は、シフトギヤ５が高速の
伝動位置Ａ３にシフト位置している状態であって、この
状態で伝動軸１とシフトギヤ５とを連動させる伝動軸１
の中間のスプライン部４と、これに対して伝動軸軸芯方
向の一方側において伝動軸１とシフトギヤ５とを連動さ
せる伝動軸１の一方のスプライン部２とは、溝部９によ
り略完全に分離された状態となっており、他方、前記中
間のスプライン部４と、これに対して伝動軸軸芯方向の
他方側において伝動軸１とシフトギヤ５とを連動させる
伝動軸１の他方のスプライン部３とは、溝部９により略
完全に分離された状態となっている。そして、シフトギ
ヤ５が中間の伝動位置Ａ３にシフト位置する状態におい
て、シフトギヤ５から中間の伝動位置Ａ３に対応位置す
る変速ギヤ８に走行用の動力が伝達されると、中間のス
プライン部４とシフトギヤ５の内面のスプライン部５ａ
との間のガタにより、例えば、図２に示すように伝動軸
１の軸芯方向に対して、シフトギヤ５の軸芯方向が少し
斜めに傾くとともに、伝動トルクによる捩じり作用によ
り、中間のスプライン部４のみが伝動軸１の円周方向に
沿って弾性変位（変位Ｂ）し、両側のスプライン部２，
３はあまり変位しない状態となる。The state shown in FIG. 1 is a state in which the shift gear 5 is shifted to the high-speed transmission position A3. In this state, the transmission shaft 1 for linking the transmission shaft 1 and the shift gear 5 is connected.
And a spline portion 2 of the transmission shaft 1 for linking the transmission shaft 1 and the shift gear 5 on one side in the axial direction of the transmission shaft with respect to the intermediate spline portion 4 is substantially completely separated by a groove portion 9. On the other hand, the other spline portion 3 of the transmission shaft 1 for linking the transmission shaft 1 and the shift gear 5 on the other side in the direction of the transmission shaft axis with respect to the intermediate spline portion 4 Are substantially completely separated from each other by the groove 9. In a state where the shift gear 5 is shifted to the intermediate transmission position A3, when traveling power is transmitted from the shift gear 5 to the transmission gear 8 corresponding to the intermediate transmission position A3, the intermediate spline portion 4 and the shift gear 5 inner surface spline portion 5a
For example, as shown in FIG. 2, the axial direction of the shift gear 5 is slightly inclined with respect to the axial direction of the transmission shaft 1 as shown in FIG. Only the spline portion 4 is elastically displaced (displacement B) along the circumferential direction of the transmission shaft 1, and the spline portions 2 on both sides are displaced.
3 is in a state where it is not so displaced.
【００１４】以上のような状態になると図１に示す状態
において、例えば、シフトギヤ５がスラスト力により図
２に示すように紙面左方（他方のスプライン部３側）に
移動し始めても、図２及び図３に示すようにシフトギヤ
５の内面のスプライン部５ａの角部５ｂが、溝部９の形
成に伴い形成された他方のスプライン部３の角部３ａに
接当する。従って、この両角部５ｂ，３ａの接当作用に
より、シフトギヤ５が伝動軸１に沿って中間の伝動位置
Ａ３から他方の伝動位置Ａ２に自然に移動するようなこ
とはない。そして、前述の手動操作式の変速レバー（図
示せず）及びシフトフォーク（図示せず）により、シフ
トギヤ５のスライド操作が行われた場合には、シフトギ
ヤ５側の角部５ｂが他方のスプライン部３の角部３ａを
乗り越えるので、シフトギヤ５のスライド操作による変
速操作は支障なく行われる。In the state shown in FIG. 1, for example, even if the shift gear 5 starts to move to the left (on the other spline portion 3 side) in FIG. As shown in FIG. 3, the corner 5b of the spline portion 5a on the inner surface of the shift gear 5 contacts the corner 3a of the other spline portion 3 formed along with the formation of the groove 9. Therefore, the shift gear 5 does not naturally move from the intermediate transmission position A3 to the other transmission position A2 along the transmission shaft 1 due to the contact between the two corners 5b and 3a. When the sliding operation of the shift gear 5 is performed by the aforementioned manually operated shift lever (not shown) and the shift fork (not shown), the corner 5b on the shift gear 5 side is connected to the other spline section. Since the vehicle moves over the corner 3a of the third gear 3, the shift operation by the slide operation of the shift gear 5 is performed without any trouble.
【００１５】逆にシフトギヤ５が他方の中速の伝動位置
Ａ２に位置して、シフトギヤ５がその他方の伝動位置Ａ
２に対応位置する変速ギヤ７に咬合している場合、シフ
トギヤ５から変速ギヤ７に走行用の動力が伝達される
と、他方のスプライン部３とシフトギヤ５の内面のスプ
ライン部５ａとの間のガタにより、伝動軸１の軸芯方向
に対してシフトギヤ５の軸芯方向が少し斜めに傾む。そ
して、伝動トルクによる捩じり作用により他方のスプラ
イン部３のみが伝動軸１の円周方向に沿って弾性変位
し、他のスプライン部４，２はあまり変位しない状態と
なる。Conversely, shift gear 5 is located at the other medium transmission position A2, and shift gear 5 is shifted to the other transmission position A.
When the transmission power is transmitted from the shift gear 5 to the transmission gear 7 when the transmission gear 7 is engaged with the transmission gear 7 located at the position corresponding to the second gear 2, the other spline portion 3 and the spline portion 5a on the inner surface of the shift gear 5 Due to the play, the axis of the shift gear 5 is slightly inclined with respect to the axis of the transmission shaft 1. Then, only the other spline portion 3 is elastically displaced along the circumferential direction of the transmission shaft 1 due to the torsional action by the transmission torque, and the other spline portions 4 and 2 are in a state where they are hardly displaced.
【００１６】以上のような状態になると図２及び図３に
示す場合と同様に、シフトギヤ５がスラスト力によって
他方の伝動位置Ａ２から図１の紙面右方（中間の伝動位
置Ａ３側）に移動し始めても、シフトギヤ５の内面のス
プライン部５ａの反対側の角部５ｂが、中間のスプライ
ン部４の溝部９の形成に伴い形成された角部に接当する
ので、この両角部５ｂの接当作用により、シフトギヤ５
が伝動軸に沿って他方の伝動位置Ａ２から中間の伝動位
置Ａ３に自然に移動するようなことはない。以上のシフ
トギヤ５における他方の伝動位置Ａ２と中間の伝動位置
Ａ３との関係は、一方の伝動位置Ａ１と中間の伝動位置
Ａ３との間においても同様に生じる。In the above state, the shift gear 5 is moved from the other transmission position A2 to the right side of FIG. 1 (toward the middle transmission position A3) by the thrust force, as in the case shown in FIGS. 2 and 3. Even after the start, the corner 5b on the inner surface of the shift gear 5 opposite to the spline 5a comes into contact with the corner formed with the formation of the groove 9 of the intermediate spline 4, so that the two corners 5b contact each other. By this action, the shift gear 5
Does not naturally move along the transmission axis from the other transmission position A2 to the intermediate transmission position A3. The relationship between the other transmission position A2 and the intermediate transmission position A3 in the shift gear 5 described above similarly occurs between the one transmission position A1 and the intermediate transmission position A3.
【００１７】〔第１別実施例〕 図４に示すように、伝動軸１における中間のスプライン
部４の一方の面４ｂを削ることにより、伝動軸１の両側
のスプライン部２，３と中間のスプライン部４との間
に、位相のずれＣを事前に与えておくように構成しても
よい。このように構成すれば伝動トルクが中間のスプラ
イン部４に掛かった場合に、図２に示す変位Ｂよりも大
きな位相のずれが、中間のスプライン部４と両側のスプ
ライン部２，３との間に発生する。この場合は、シフト
ギヤ５を中間の伝動位置Ａ３に操作している状態を特に
重要視して、この中間の伝動位置Ａ３からシフトギヤ５
が自然に移動しないようにする為の構造となる。[First Alternative Embodiment] As shown in FIG. 4, by cutting off one surface 4b of the intermediate spline portion 4 of the transmission shaft 1, the spline portions 2 and 3 on both sides of the transmission shaft 1 A phase shift C may be provided between the spline unit 4 and the spline unit 4 in advance. With this configuration, when the transmission torque is applied to the intermediate spline portion 4, a phase shift larger than the displacement B shown in FIG. 2 occurs between the intermediate spline portion 4 and the spline portions 2 and 3 on both sides. Occurs. In this case, the state in which the shift gear 5 is operated to the intermediate transmission position A3 is particularly important, and the shift gear 5 is shifted from the intermediate transmission position A3.
This is a structure for preventing the natural movement.
【００１８】〔第２別実施例〕 図１の構造において、伝動軸１における両側のスプライ
ン部２，３の外径よりも、中間のスプライン部４の外径
を僅かに小に設定して、図５に示すように両側のスプラ
イン部２，３と中間のスプライン部４において、半径方
向に差Ｅを与えておいてもよい。この図５のように構成
すれば伝動トルクが中間のスプライン部４に掛かった場
合に、図２に示すような変位Ｂによる円周方向での位相
のずれ、及び半径方向の差Ｅにより、シフトギヤ５の角
部５ｂがさらによく両側のスプライン部２，３の角部２
ａ，３ａに接触する。この場合も図４と同様に、シフト
ギヤ５を中間の伝動位置Ａ３に操作している状態を特に
重要視して、この中間の伝動位置Ａ３からシフトギヤ５
が自然に移動しないようにする為の構造となる。[Second Alternative Embodiment] In the structure of FIG. 1, the outer diameter of the intermediate spline portion 4 is set to be slightly smaller than the outer diameter of the spline portions 2 and 3 on both sides of the transmission shaft 1. As shown in FIG. 5, a difference E may be provided in the radial direction between the spline portions 2 and 3 on both sides and the intermediate spline portion 4. When the transmission torque is applied to the intermediate spline portion 4 according to the configuration shown in FIG. 5, the shift gear shifts due to a phase shift in the circumferential direction due to the displacement B and a difference E in the radial direction as shown in FIG. 5 is better at the corners 5b.
a, 3a. Also in this case, similarly to FIG. 4, the state in which the shift gear 5 is operated to the intermediate transmission position A3 is particularly important, and the shift gear 5 is shifted from the intermediate transmission position A3.
This is a structure for preventing the natural movement.
【００１９】〔第３別実施例〕 図１の構造において溝部９の幅を大きくして、図６に示
すようにシフトギヤ５を中間の伝動位置Ａ３に操作して
いる状態において、両側のスプライン部２，３の角部２
ａ，３ａがシフトギヤ５の角部５ｂの両外側に位置し、
スプライン部４の角部４ａがシフトギヤ５の内面側に位
置するように構成してもよい。この図６のように構成す
れば伝動トルクが中間のスプライン部４に掛かった場合
に、図２に示すような変位Ｂによる円周方向の位相のず
れが生じると共に、伝動軸１が中間のスプライン部４付
近でたわんで、図７に示すように両側のスプライン部
２，３及び中間のスプライン部４と間に半径方向の差が
生じて、シフトギヤ５の角部５ｂがさらによく両側のス
プライン部２，３の角部２ａ，３ａに接当する。この場
合も図４と同様に、シフトギヤ５を中間に伝動位置Ａ３
に操作している状態を特に重要視して、この中間の伝動
位置Ａ３からシフトギヤ５が自然に移動しないようにす
る為の構造となる。Third Embodiment In the structure shown in FIG. 1, the width of the groove 9 is increased, and as shown in FIG. 6, when the shift gear 5 is operated to the intermediate transmission position A3, the spline portions on both sides are A few corners 2
a, 3a are located on both outer sides of the corner 5b of the shift gear 5,
The configuration may be such that the corner 4 a of the spline portion 4 is located on the inner surface side of the shift gear 5. 6, when the transmission torque is applied to the intermediate spline portion 4, the phase shift in the circumferential direction due to the displacement B as shown in FIG. 2 occurs, and the transmission shaft 1 is connected to the intermediate spline portion. 7, a radial difference is generated between the spline portions 2 and 3 on the both sides and the intermediate spline portion 4 as shown in FIG. Abut on a few corners 2a, 3a. In this case as well, as in FIG.
In particular, the state where the shift gear 5 is being operated is regarded as important, so that the shift gear 5 does not naturally move from the intermediate transmission position A3.
【００２０】〔第４別実施例〕 図１の構造において、中間のスプライン部４の歯の大き
さをそのままにしておいて、中間のスプライン部４の歯
数を両側のスプライン部２，３よりも少なくしてもよ
い。このように構成すれば伝動トルクが中間のスプライ
ン部４に掛かった場合に、図２に示すような変位Ｂによ
る円周方向の位相のずれが生じると共に、伝動軸１が中
間のスプライン部４付近でたわんで、図７に示すように
両側のスプライン部２，３及び中間のスプライン部４と
間に半径方向の差が生じて、シフトギヤ５の角部５ｂが
さらによく両側のスプライン部２，３の角部２ａ，３ａ
に接触する。この場合も図４と同様に、シフトギヤ５を
中間の伝動位置Ａ３に操作している状態を特に重要視し
て、この中間の伝動位置Ａ３からシフトギヤ５が自然に
移動しないようにする為の構造となる。[Fourth Embodiment] In the structure of FIG. 1, the size of the teeth of the intermediate spline portion 4 is kept as it is, and the number of teeth of the intermediate spline portion 4 is changed from the spline portions 2 and 3 on both sides. May be reduced. With this configuration, when the transmission torque is applied to the intermediate spline portion 4, a phase shift in the circumferential direction due to the displacement B as shown in FIG. 2 occurs, and the transmission shaft 1 moves near the intermediate spline portion 4. 7, a radial difference is generated between the spline portions 2 and 3 on the both sides and the intermediate spline portion 4, so that the corner 5b of the shift gear 5 is further improved and the spline portions 2 and 3 on both sides are better. Corners 2a, 3a
Contact Also in this case, similarly to FIG. 4, a structure for preventing the shift gear 5 from naturally moving from the intermediate transmission position A3 with particular emphasis on the state where the shift gear 5 is operated to the intermediate transmission position A3. Becomes
【００２１】以上の図１〜図７の構造では伝動軸１の外
周全周に亘る溝部９としているが、この溝部９を伝動軸
１の外周の各位相に部分的に設けてもよい。図１〜図７
の構造ではシフトギヤ５から変速ギヤ６，７，８に動力
が流れる構成であるが、この関係を逆にして、変速ギヤ
６，７，８からシフトギヤ５に動力が流れるように構成
してもよい。本発明は走行用の伝動系ばかりでなく、作
業装置への伝動系等の各種の伝動系に適用できる。In the structure shown in FIGS. 1 to 7 described above, the groove 9 extends over the entire outer periphery of the transmission shaft 1, but the groove 9 may be partially provided in each phase of the outer periphery of the transmission shaft 1. 1 to 7
In the structure (1), the power flows from the shift gear 5 to the transmission gears 6, 7, 8; however, the relationship may be reversed so that the power flows from the transmission gears 6, 7, 8 to the shift gear 5. . INDUSTRIAL APPLICABILITY The present invention can be applied not only to a transmission system for traveling but also to various transmission systems such as a transmission system to a working device.
【００２２】尚、特許請求の範囲の項に図面との対照を
便利にする為に符号を記すが、該記入により本発明は添
付図面の構成に限定されるものではない。Incidentally, reference numerals are written in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.
【図１】伝動軸及びシフトギヤ付近の正面図FIG. 1 is a front view of the vicinity of a transmission shaft and a shift gear.
【図２】図１に示す状態からシフトギヤが紙面左方に移
動した場合の、スプライン部付近の拡大正面図FIG. 2 is an enlarged front view of the vicinity of a spline portion when the shift gear has moved to the left in the drawing from the state shown in FIG. 1;
【図３】図２におけるＦ−Ｆ方向から見た側面図FIG. 3 is a side view seen from the FF direction in FIG. 2;
【図４】第１別実施例における伝動軸のスプライン部付
近の拡大正面図FIG. 4 is an enlarged front view of the vicinity of a spline portion of a transmission shaft in a first alternative embodiment.
【図５】第２別実施例における伝動軸のスプライン部付
近の拡大側面図FIG. 5 is an enlarged side view of the vicinity of a spline portion of a transmission shaft in a second alternative embodiment.
【図６】第３別実施例における伝動軸及びシフトギヤ付
近の正面図FIG. 6 is a front view showing the vicinity of a transmission shaft and a shift gear in a third alternative embodiment.
【図７】図６の第３別実施例において伝動軸がたわんだ
状態でのスプライン部付近の拡大側面図FIG. 7 is an enlarged side view of the vicinity of a spline portion in a state where the transmission shaft is bent in the third alternative embodiment of FIG. 6;
【図８】本発明と比較する為に提示した比較例における
伝動軸及びシフトギヤ付近の正面図FIG. 8 is a front view of the vicinity of a transmission shaft and a shift gear in a comparative example presented for comparison with the present invention.
１ 伝動軸 ２，３，４ 伝動軸のスプライン部 ５ シフトギヤ ６，７，８ 変速ギヤ ９ 伝動軸の溝部 Ａ１，Ａ２，Ａ３ シフトギヤの伝動位置 DESCRIPTION OF SYMBOLS 1 Transmission shaft 2,3,4 Spline part of transmission shaft 5 Shift gear 6,7,8 Transmission gear 9 Groove part of transmission shaft A1, A2, A3 Transmission position of shift gear
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) F16H 3/22 F16D 3/06 F16H 55/17 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 6 , DB name) F16H 3/22 F16D 3/06 F16H 55/17
Claims (2)
スライド操作自在にかつ一体回転自在に外嵌させたシフ
トギヤ（５）を、伝動軸軸芯方向の中間の伝動位置（Ａ
３）で一つの変速ギヤ（８）に咬合させるとともに、前
記中間の伝動位置（Ａ３）の軸芯方向両側の伝動位置
（Ａ１），（Ａ２）の夫々にシフトギヤ（５）をスライ
ド操作することにより、その両側の伝動位置（Ａ１），
（Ａ２）の各位置で前記シフトギヤ（５）を前記とは異
なる各変速ギヤ（６），（７）に咬合させて、変速する
ように構成してある変速伝動構造であって、前記中間の伝動位置（Ａ３）にシフト位置するシフトギ
ヤ（５）を伝動軸（１）に連動させる伝動軸（１）側の
中間のスプライン部（４）と、前記中間の伝動位置（Ａ
３）の軸芯方向両側の伝動位置（Ａ１），（Ａ２）にお
ける伝動軸（１）側のスプライン部（２），（３）とを
分離させる溝部（９）を伝動軸（１）に形成してある 変
速伝動構造。1. A transmission shaft (1) is connected to a transmission shaft (1) via a spline structure.
A shift that can be slid freely and rotated integrally with the outside
Gear (5) is moved to an intermediate transmission position (A
In 3), the gear is engaged with one transmission gear (8).
Transmission position on both sides in the axial center direction of the intermediate transmission position (A3)
Slide the shift gear (5) to each of (A1) and (A2).
Operation, the transmission positions (A1),
At each position of (A2), the shift gear (5) is different from the above.
Gears (6) and (7)
And a shift gear that is shifted to the intermediate transmission position (A3).
Gear (5) linked to the transmission shaft (1)
An intermediate spline section (4) and the intermediate transmission position (A
3) At the transmission positions (A1) and (A2) on both sides in the axial direction,
The splines (2) and (3) on the transmission shaft (1) side
A transmission structure in which a separating groove (9) is formed in the transmission shaft (1) .
側のスプライン部（２），（３）とを分離させる両溝部
（９）を、中間の伝動位置（Ａ３）にシフト位置するシ
フトギヤ（５）内面の内方側に入り込ませてある請求項
１記載の変速伝動構造。2. An intermediate spline part (4) and both axial direction.
Grooves that separate the side splines (2) and (3)
(9) is shifted to the intermediate transmission position (A3).
The transmission structure according to claim 1, wherein the transmission is arranged to enter an inner side of the inner surface of the shift gear (5) .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4199319A JP2907645B2 (en) | 1992-07-27 | 1992-07-27 | Transmission structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4199319A JP2907645B2 (en) | 1992-07-27 | 1992-07-27 | Transmission structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0650397A JPH0650397A (en) | 1994-02-22 |
| JP2907645B2 true JP2907645B2 (en) | 1999-06-21 |
Family
ID=16405828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4199319A Expired - Fee Related JP2907645B2 (en) | 1992-07-27 | 1992-07-27 | Transmission structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2907645B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2909146B1 (en) * | 2006-11-28 | 2009-06-05 | Snecma Sa | DEVICE FOR CONNECTING TWO ROTARY TREES, PARTICULARLY IN A TURBOMACHINE. |
| CN106989113A (en) * | 2017-01-18 | 2017-07-28 | 杨仁忠 | Gear connects clutch transmission axle |
-
1992
- 1992-07-27 JP JP4199319A patent/JP2907645B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0650397A (en) | 1994-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3023561B2 (en) | Single shaft type shift device | |
| JPH0131058B2 (en) | ||
| JP2002174261A (en) | Synchronizing device for transmission | |
| US4809832A (en) | Gear synchronizer mechanism | |
| JPH07259990A (en) | Shift control mechanism for transmission | |
| JP2907645B2 (en) | Transmission structure | |
| JP2001304411A (en) | Speed change device for automatic transmission | |
| JPH05187457A (en) | Reverse brake structure of transmission | |
| EP0145388A1 (en) | Gear synchronizer for power transmission | |
| JP6330890B2 (en) | Transmission reverse mechanism | |
| JPH0658344A (en) | Speed change operating device of manual gear speed changer | |
| JPH051059U (en) | Gear noise reduction device for transmission | |
| JP2005155800A (en) | Gear clash prevention mechanism of reverse shift | |
| JP3641839B2 (en) | Reverse operation mechanism of gear transmission | |
| JP2006038091A (en) | Actuator | |
| JP2000274446A (en) | Dog clutch mechanism and automatic transmission using the same | |
| JPH06159389A (en) | Synchronous device of transmission | |
| JP2005291423A (en) | Synchronizing device for transmission | |
| JP3001486B2 (en) | Gear type transmission | |
| JPH07332387A (en) | Gear slip-off preventing mechanism for transmission | |
| JP2009036217A (en) | Synchronous device of transmission | |
| JPH11210778A (en) | Synchronizing device of transmission | |
| JPH0237325Y2 (en) | ||
| JPH0514707U (en) | Mission structure | |
| JP3161260B2 (en) | Gear transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |